Coating machine



April 29, 1930. c, .T HAT H 1,756,744

COATING MACHINE Filed March 16, 1.928

INVENTOR 1i f/m'r/cs 7 flak/Z A TTORNE Y5 Patented Apr. 29, 1935 CHARLEST. HATCH, 0F ALBION, MICHIGAN, ASSIGNOR T0 UNION STEEL PRODUCTSGOME'ANY, OF ALBION, MICHIGAN COATING MACHINE Application filed March16, 1928. Serial No. 262,165.

My improved coating machine is especially designed by me for thegreasing of baking pans and I have illustrated the same in thisapplication as adapted for that purpose. Certain features of myimprovements are, however, desirable and readily adapted for use inmachines for spraying or coating objects with other materials thangrease.

The main objects of this invention are:

First, to provide an improved machine whereby pans or the like may bereadily and evenly sprayed or coated with material such as grease.

Second, to provide a machine of the char acter described in which thedesired amount of grease may be very accurately gauged.

Third, to provide a machine of this chara'cter which is easily operatedand is of large capacity.

Fourth, to provide a machine of the class described by means of whichcircular baking pans may be uniformly coated.

Objects relating to details and economies of my invention willdefinitely appear from the description to follow. The invention isdefined and pointed out in the claims.

A structure which is a preferred embodiment of my invention isillustrated in the accompanying drawing, forming a part of thisapplication, in which:

Fig. 1 is an end view .of my coating machine, the cabinet being shown invertical section from front to rear.

Fig. 2 is a detail section on line 22 of Fig. 1.

Fig. 8 is an enlarged detail section on line 3-3 of Fig. 2.

In the drawing similar reference. characters refer to similar partsthroughout the several views.

Referring to the drawing, I provide a cabinet designated generally bythe numeral 1 and of such dimensions as to house the main parts of themachine. In the upper part of this housing, I suspend a tank 2 forgrease such as lard or other'suitable material. The heating means forthis tank is not illustrated.

Extending longitudinally of the tank is a supporting bar 8 on which is'a'djustably mounted a plurality of nozzle supporting brackets 4, thesebrackets being secured upon the bar by means of clamps 5. On each ofthese brackets I mount a nozzle designated generally by the numeral 6.These nozzles have tubular spindle portions 7 rotatably supported in thebrackets, the spindles having air passages 8 therein connected by theflexible conduits 9 to the supply conduit 10.

The nozzles are provided with axially disposed fluid conduits 11depending into the tank and provided with screened intakes 12. Bydisposing these conduits axially, a minimum of agitation is occasionedon rotation of the nozzles, this being of advantage in view of the factthat in greasing baking dishes, crumbs are likely to be dislodged andfall into the tank where they settle at the bottom and this rotativemovement of the intake does not disturb them.

The nozzle is provided with a central fluid discharge tip 13 and a pairof air discharge tips 14 disposed oppositely and operatively associatedwith the fluid tip so as to atomize fluid and discharge the same in afan-like spray;

To oscillate the several sprays simultaneously, I mount pinions 15 onthe spindles thereof in coacting relation to the rack 14,,recipr-ocatingly mounted in the supporting bar 3, so that when this baris reciprocated, the several nozzles are simultaneously oscillated ontheir vertical axis.

The rack bar actuating means in the structure illustrated consists of apinion 16 mounted at the end of the tank to ooact with the rack, thispinion having a beveled gear 17 connected thereto, meshing with abeveled gear 18 which is connected by the link 19 to I the arm 20 on therockshaft 21. This rockshaft is controlled by a mechanism which isillustrated and described in detail in my application for Letters Patentfiled May 1, 1926, Serial No. 106,025. The motor is designated by thenumeral 27, the driving connections for the motor to the gear 31 beingcontrolled by a clutch designated generally by the numeral 22. Thisclutch is operatively connected through the lever 23 and the push rod24't0 the pan table 25. This pan table is adapted to receive pans 26which are illustrated as circular pans. The operator, placing a pan onthe table, pushes 'downwardly thereon and this through the clutchconnection described, actuates the clutch to drive the gear 31. Thisgear is provided with a wrist .pin 32 connected by the pitnIa-n 33 to anarm 34 on the rockshaft 21.

This same mechanism controls the air valve 28 which controls thedelivery of air from the pressure tank 29 to the conduit 10, the valvebeing controlled by a cam 30 on the rockshaft 21, the valve mechanismbeing that shown in my said application for patent. 7

With this arrangement, the air control valve and the-nozzle aresynchronously actuated so that a fan-like spray is delivered to thepans, the nozzles being oscillated at 180 degrees thereby completely anduniformly coating the pans. 7

My improved coating machine is simple and durable in its parts, is oflarge capacity and very easy to operate. 5

I have not attempted to illustrate certain other embodiments oradaptations which I contemplate as I believe this disclosure made willenable those skilled in the art to which my invention relates to embodyor adapt the same as may be-desired. 7

Having thus described my invention, what I claim as new and desire .tosecure by Letters Patent, is:

1. In a structure of the class described, the

combination of a tank, a plurality of spray nozzles adapted to deliverfan-like sprays disposed in alignment and mounted for rotative movement,said spray nozzles being provided with axially disposed fluid intakesdepending into said tank, an air supply conduit, flexible connectionsfor said air supply conduit to said nozzles, a control valve for saidair-conduit, a cam operatively associated with said control valve, a pantable disposed above said tank, means for actuating said cam controlledfrom said pan table, pinions on said nozzles, a reciprocatingly mountedrack operatively associated with the several pinions, and operatingconnections from said cam to said rack.

2. Ina structureof the class described, the I combination of a pluralityof spray nozzles adapted to deliver fan-like sprays disposed inalignment and mounted for rotative movement, an air supply conduit, acontrol valve for said air conduit, a cam operatively associated withsaid control valve, a pan table disposed above said tank, means foractuating said cam controlled from said pan table, pinions on saidnozzles, a reciprocatingly mounted rack operatively associated with theseveral pinions, and operating connections from said cam to said rack.

i. In a structure of the class described, the combination of a pluralityof spray nozzles adapted to deliver fan-like sprays. disposed inalignment and mounted for rotative movement, an air supply conduit, acontrol valve for said air conduit, pinions on said nozzles, areciprocatingly mounted rack operatively associated with the severalpinions, and means for synchronously operating said valve and rack. I

5. In a structure of the class described, the combination of a tank, aplurality of spray nozzles adapted to deliver fan-like sprays mountedfor rotative movement and provided with axially disposed fluid intakesdesending into said tank an air su 3 l conduit flexible connections forsaid air supply conduit to said nozzles, a control valve for said airconduit, means'for simultaneously rotating said nozzles, andoperatingconnections for said nozzle actuating means and saidicontrolvalve whereby they are synchronously operated. 7

6. In a structure of the class described, the combination of a tank, aspray nozzle adapted to deliver a fan-like spray rotatably mounted on anaxis ina plane parallel with the plane of the spray and provided with afluid intake depending into said tank, a pan table disposed above saidtank, and means for simultaneously opening said valve and rotating saidnozzle controlled from said pan table. V

In witness whereof I have hereunto set hand.

CHARLES T. HATCH.

